package com.kun.mall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.kun.common.constant.ProductConstant;
import com.kun.common.to.SkuHasStockVo;
import com.kun.common.to.SkuReductionTo;
import com.kun.common.to.SpuBoundTo;
import com.kun.common.to.es.SkuEsModel;
import com.kun.common.utils.PageUtils;
import com.kun.common.utils.Query;
import com.kun.common.utils.R;
import com.kun.mall.product.dao.SpuInfoDao;
import com.kun.mall.product.entity.*;
import com.kun.mall.product.feign.CouponFeignService;
import com.kun.mall.product.feign.SearchFeignService;
import com.kun.mall.product.feign.WareFeignService;
import com.kun.mall.product.service.*;
import com.kun.mall.product.vo.*;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;


@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    SpuInfoDescService spuInfoDescService;

    @Autowired
    SpuImagesService spuImagesService;

    @Autowired
    AttrService attrService;

    @Autowired
    ProductAttrValueService attrValueService;

    @Autowired
    SkuInfoService skuInfoService;

    @Autowired
    SkuImagesService skuImagesService;

    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    CouponFeignService couponFeignService;

    @Autowired
    BrandService brandService;

    @Autowired
    CategoryService categoryService;

    @Autowired
    WareFeignService wareFeignService;

    @Autowired
    SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * 发布商品
     * @param vo
     */
//    @GlobalTransactional
    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {

        //1.保存spu基本信息：pms_spu_info
        SpuInfoEntity spuInfoEntity = new SpuInfoEntity();

        BeanUtils.copyProperties(vo,spuInfoEntity);
        spuInfoEntity.setCreateTime(new Date());
        spuInfoEntity.setUpdateTime(new Date());

        this.saveBaseSpuInfo(spuInfoEntity);

        //2.保存spu描述图片：pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity  = new SpuInfoDescEntity();

        descEntity.setSpuId(spuInfoEntity.getId());
        descEntity.setDecript(String.join(",",decript));

        spuInfoDescService.saveSpuInfoDesc(descEntity);

        //3.保存spu图片集：pms_spu_images
        List<String> images = vo.getImages();
        spuImagesService.saveImages(spuInfoEntity.getId(),images);

        //4.保存spu规格参数：pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(attr -> {
            ProductAttrValueEntity valueEntity = new ProductAttrValueEntity();

            valueEntity.setAttrId(attr.getAttrId());
            AttrEntity id = attrService.getById(attr.getAttrId());
            valueEntity.setAttrName(id.getAttrName());
            valueEntity.setAttrValue(attr.getAttrValues());
            valueEntity.setQuickShow(attr.getShowDesc());
            valueEntity.setSpuId(spuInfoEntity.getId());

            return valueEntity;
        }).collect(Collectors.toList());

        attrValueService.saveProductAttr(collect);

        //5.保存spu积分信息：sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();

        BeanUtils.copyProperties(bounds,spuBoundTo);
        spuBoundTo.setSpuId(spuInfoEntity.getId());

        R r = couponFeignService.saveSpuBounds(spuBoundTo);

        if (r.getCode() != 0){
            log.error("保存失败！");
        }

        //6.保存spu对应的sku信息：
        List<Skus> skus = vo.getSkus();
        if (skus != null && skus.size() > 0){
            skus.forEach(item -> {
                String defaultImg = "";
                for (Images img:item.getImages()){
                    if (img.getDefaultImg() == 1){
                        defaultImg = img.getImgUrl();
                    }
                }

                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item,skuInfoEntity);
                skuInfoEntity.setBrandId(spuInfoEntity.getBrandId());
                skuInfoEntity.setCatalogId(spuInfoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(spuInfoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);
                //基本信息：
                skuInfoService.saveSkuInfo(skuInfoEntity);

                Long skuId = skuInfoEntity.getSkuId();

                //基本信息：
                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                }).filter(entity -> {
                    return !StringUtils.isEmpty(entity.getImgUrl());
                }).collect(Collectors.toList());

                //图片信息：pms_spu_images
                skuImagesService.saveBatch(imagesEntities);

                //销售属性信息：pms_sku_sale_attr_value
                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity attrValueEntity = new SkuSaleAttrValueEntity();

                    BeanUtils.copyProperties(a, attrValueEntity);
                    attrValueEntity.setSkuId(skuId);

                    return attrValueEntity;

                }).collect(Collectors.toList());

                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);

                //优惠券，满减信息：sms_sku_full_reduction
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item,skuReductionTo);
                skuReductionTo.setSkuId(skuId);

                if(skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) == 1){

                    R r1 = couponFeignService.saveSkuReduction(skuReductionTo);

                    if (r1.getCode() != 0){
                        log.error("保存失败！");
                    }
                }

            });
        }
    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity spuInfoEntity) {
        this.baseMapper.insert(spuInfoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {

        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();

        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)){
            wrapper.and((w) -> {
                w.eq("id",key).or().like("spu_name",key);
            });
        }

        String status = (String) params.get("status");
        if (!StringUtils.isEmpty(status)){
            wrapper.eq("publish_status",status);
        }

        String brandId = (String) params.get("brandId");
        if (!StringUtils.isEmpty(brandId) && !"0".equals(brandId)){
            wrapper.eq("brand_id",brandId);
        }

        String catelogId = (String) params.get("catelogId");
        if (!StringUtils.isEmpty(catelogId) && !"0".equals(catelogId)){
            wrapper.eq("catalog_id",catelogId);
        }

        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );

        return new PageUtils(page);

    }

    /**
     * 商品上架
     * @param spuId
     */
    @Override
    public void up(Long spuId) {

        //1、查出当前spuid对应的所有sku信息，品牌的名字。
        List<SkuInfoEntity> skus = skuInfoService.getSkusBySpuId(spuId);

        List<Long> skuIdList = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());

        //TODO：4.查询当前sku所有可以被用来检索的规格属性
        List<ProductAttrValueEntity> baseAttrs = attrValueService.baseAttrlistforspu(spuId);
        List<Long> attrIds = baseAttrs.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        List<Long> searchAttrIds = attrService.selectSearchAttrIds(attrIds);

        Set<Long> idSet = new HashSet<>(searchAttrIds);

        List<SkuEsModel.Attrs> attrsList = baseAttrs.stream().filter(item -> {
            return idSet.contains(item.getAttrId());
        }).map(item -> {
            SkuEsModel.Attrs attrs1 = new SkuEsModel.Attrs();
            BeanUtils.copyProperties(item, attrs1);
            return attrs1;
        }).collect(Collectors.toList());

        Map<Long, Boolean> stockMap = null;
        try {
            //TODO: 1.发送远程调用，库存系统查询是否有库存
            R r = wareFeignService.getSkusHasStock(skuIdList);

            TypeReference<List<SkuHasStockVo>> typeReference = new TypeReference<List<SkuHasStockVo>>(){};

            stockMap = r.getData(typeReference).stream().collect(Collectors.toMap(SkuHasStockVo::getSkuId, item -> item.getHasStock()));
        }catch (Exception e){
            log.error("库存查询异常，原因{}",e);
        }

        Map<Long, Boolean> finalStockMap = stockMap;

        List<SkuEsModel> uoProducts = skus.stream().map(sku -> {
            //组装需要的数据
            SkuEsModel esModel = new SkuEsModel();
            BeanUtils.copyProperties(sku,esModel);
            //skuPrice,skuImg,
            esModel.setSkuPrice(sku.getPrice());
            esModel.setSkuImg(sku.getSkuDefaultImg());
            //hasStock
            if (finalStockMap == null){
                esModel.setHasStock(true);
            }else {
                esModel.setHasStock(finalStockMap.get(sku.getSkuId()));
            }
            //TODO：2.热度评分
            esModel.setHotScore(0L);

            //TODO：3.查询品牌和分类的名字信息
            BrandEntity brand = brandService.getById(esModel.getBrandId());
            esModel.setBrandName(brand.getName());
            esModel.setBrandImg(brand.getLogo());

            CategoryEntity category = categoryService.getById(esModel.getCatalogId());
            esModel.setCatalogName(category.getName());

            //设置检索熟悉
            esModel.setAttrs(attrsList);

            return esModel;
        }).collect(Collectors.toList());

        //todo: 发给es进行保存 mall-search
        R r = searchFeignService.productStatusUp(uoProducts);

        if (r.getCode() == 0){
            //远程调用成功，修改状态
            baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());

        }else {
            //远程调用失败
            //TODO:重复调用？接口幂等性；重试机制？xxx
            //Feign调用流程
            /**
             * 1、构造请求数据，将对象转为json；
             *      RequestTemplate template = buildTemplateFromArgs.create(argv);
             * 2、发送请求进行执行（执行成功会解码响应数据）：
             *      executeAndDecode(template);
             * 3、执行请求会有重试机制
             *      while(true){
             *          try{
             *            executeAndDecode(template);
             *          }catch(){
             *              try{retryer.continueOrPropagate(e);}catch(){throw ex;}
             *              continue;
             *          }
             *
             *      }
             */

        }
    }

    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {
        SkuInfoEntity byId = skuInfoService.getById(skuId);
        Long spuId = byId.getSpuId();

        SpuInfoEntity spuInfoEntity = getById(spuId);
        return spuInfoEntity;
    }

}